Pipe-joint.



J. A. BRODIN.

PIPE JOINT.

APPLICATION FILED AUG. 17, 1907.

Fig.1 I

WITNESSES: INVENTOI? JOHN A. BRODIN, OF CHICAGO, ILLINOIS.

PIPE-JOINT.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed August 17, 1907. Serial No. 388,970.

To all whom it may concern:

- Be it known that I, JOHN A. BRODIN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a-certain new and useful Improvement in Pipe-Joints, of whichthe following is a specification.

This invention relates to joints for pipes and has for its object toprovide a new and improved device of this description.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a view showing a stove pipe joint embodying the invention;Fig. 2 is a view showing a side elevation of the connecting or lookingpiece which holds the two sec tions of the pipe together; Figs. 3 and 4are views of the two opposite sides of the device of Fig. 2 Fig. 5 is aview showing a modified construction; Fig. 6 is a sectional view takenon line 6-6 of Fig. 5.

In the drawings the invention is illustrated as used in connection withtwo sections, A and B, of sheet iron pipe such as the ordinary stovepipe. The end of one section is slid within the end of the othersection, as shown, and the connecting or looking piece is placed inposition, the two sections of pipe being provided with openings for thispurpose.

The connecting or looking piece consists of the part O which passesthrough both sections of the pipe and the part D which passes betweenthe two sections of the pipe. These parts may be of any desired shapeand size, the part D preferably being thin, as shown.

One section of the pipe, say for example, the section B, is providedwith an opening B which is preferably an elongated opening shaped likethe part D. The other section is provided with an opening which may besimply large enough to permit the part O to enter, as shown in Fig. 1.In connecting the two sections together they are placed in the positionshown in Fig. 1 and the connecting or looking part placed in position sothat the part C will enter the opening in both pipes, while the part Dwill pass through the opening B The locking device is then given a halfturn so that it takes the position shown in Fig. 1. The parts are thenlooked in position and cannot be separated until the locking orconnecting iece is rotated to the proper position an removed. Somesuitable means may be provided to prevent the connecting or lookingpiece from being accidentally rotated so as to prevent the accidentalseparation of the sections of the pipe. Any suitable arrangement forthis purpose may be used. One of the pipe sections and the part D may beprovided with interlocking parts which engage when the connecting orlocking device is in its locking position.

As shown in Figs. 5 and 6, the section B is provided with an indentationor groove A while the part D is provided with a projection D which fitsinto this indentation or groove A when the device is in its lockingposition. The interlocking parts can, however, be readily separated bytaking hold of the part 0 and rotating it.

It will be seen that in connecting the two sections together the endsare arranged so as to overlap and the openings therein arranged toregister. .The connecting or locking device is then passed through theopening, the elongated part D being passed only through the opening BThe locking device is then partially rotated and the ends of theelongated part then pass between the two sections and engage both ofsaid sections to prevent the withdrawal of the connecting or lockingdevice.

I claim:

1. A pipe joint comprising two pipe sections with overlapping ends,provided with dissimilar but substantially registering openings, arotatable connecting piece which passes through both of such openingsand has a part adapted to be passed, when it is rotated, between thesections.

2. A pipe joint comprising two pipe sec tions with their endsoverlapping, a connecting piece having a part which engages both of saidsections, another part which passes between the sections, andinterlocking devices, one on said latter part and one on one of saidsections which hold the connecting piece in position.

3. A pipe joint comprising two pipe sections with their endsoverlapping, each provided with an opening, a connecting device forconnecting the sections together consisting of a stem adapted to berotated and intermediate its ends a part diflering in tion provided withan opening, said openings adapted to register when the sections are intheir locking osition, the opening in one section being e ongated, aconnecting device adapted to fit into said openings and provided with anelongated part which is adapted to pass through the elongated opening inone section, the parts arranged so that when said elongated piece ispassed. through such elongated opening it may be partially 10 turned sothat the ends thereof pass between the two sections and engage both ofthem to prevent the removal of the connecting device.

JOHN A. BRODIN. Witnesses SOPHIE B. WERNER, ABBIE E. JonNsoN.

